- Implemented an image attachment to the Writing exercise;

- Made it so the exams are now sorted when going through the history;
- Corrected some little mistakes;

src/interfaces/exam.ts

@@ -12,6 +12,7 @@ export interface ReadingExam {
 	module: "reading";
 	minTimer: number;
 	type: "academic" | "general";
+	isDiagnostic: boolean;
 }
 
 export interface ListeningExam {
@@ -23,6 +24,7 @@ export interface ListeningExam {
 	exercises: Exercise[];
 	module: "listening";
 	minTimer: number;
+	isDiagnostic: boolean;
 }
 
 export interface UserSolution {
@@ -42,6 +44,7 @@ export interface WritingExam {
 	id: string;
 	exercises: Exercise[];
 	minTimer: number;
+	isDiagnostic: boolean;
 }
 
 interface WordCounter {
@@ -54,6 +57,7 @@ export interface SpeakingExam {
 	module: "speaking";
 	exercises: Exercise[];
 	minTimer: number;
+	isDiagnostic: boolean;
 }
 
 export type Exercise =
@@ -70,6 +74,7 @@ export interface WritingExercise {
 	info: string; //* The information about the task, like the amount of time they should spend on it
 	prompt: string; //* The context given to the user containing what they should write about
 	wordCounter: WordCounter; //* The minimum or maximum amount of words that should be written
+	attachment?: string; //* The url for an image to work as an attachment to show the user
 	userSolutions: {
 		id: string;
 		solution: string;